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Journal articles on the topic 'Colonies animales'

Author: Grafiati

Published: 4 June 2021

Last updated: 30 January 2023

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1

Brown, Charles R., and Mary Bomberger Brown. "Does Intercolony Competition for Food Affect Colony Choice in Cliff Swallows?" Condor 104, no. 1 (2002): 117–28. http://dx.doi.org/10.1093/condor/104.1.117.

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AbstractExplaining why breeding colonies vary in size has been a persistent problem in the study of animal spatial distribution. One hypothesis is that colony size reflects local food availability, which may be affected by the number of conspecifics feeding in a given area. We investigated whether colony size in Cliff Swallows (Petrochelidon pyrrhonota) was influenced by competition for food from birds in nearby colonies. Because we knew where Cliff Swallows foraged in relation to their colonies, we could designate for each colony site which neighboring colonies shared its foraging range. If i

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Simpson, Carl, Amalia Herrera-Cubilla, and Jeremy B. C. Jackson. "How colonial animals evolve." Science Advances 6, no. 2 (2020): eaaw9530. http://dx.doi.org/10.1126/sciadv.aaw9530.

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The evolution of modular colonial animals such as reef corals and bryozoans is enigmatic because of the ability for modules to proliferate asexually as whole colonies reproduce sexually. This reproductive duality creates an evolutionary tension between modules and colonies because selection operates at both levels. To understand how this evolutionary conflict is resolved, we compared the evolutionary potential of module- and colony-level traits in two species of the bryozoan Stylopoma, grown and bred in a common garden experiment. We find quantitatively distinct differences in the evolutionary

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Wakefield, Ewan D., Thomas W. Bodey, Stuart Bearhop, et al. "Space Partitioning Without Territoriality in Gannets." Science 341, no. 6141 (2013): 68–70. http://dx.doi.org/10.1126/science.1236077.

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Colonial breeding is widespread among animals. Some, such as eusocial insects, may use agonistic behavior to partition available foraging habitat into mutually exclusive territories; others, such as breeding seabirds, do not. We found that northern gannets, satellite-tracked from 12 neighboring colonies, nonetheless forage in largely mutually exclusive areas and that these colony-specific home ranges are determined by density-dependent competition. This segregation may be enhanced by individual-level public information transfer, leading to cultural evolution and divergence among colonies.

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Nogueira, João Miguel de Matos. "Fauna living in colonies of Mussismilia hispida (Verrill) (Cnidaria: Scleractinia) in four South-eastern Brazil islands." Brazilian Archives of Biology and Technology 46, no. 3 (2003): 421–32. http://dx.doi.org/10.1590/s1516-89132003000300014.

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Colonies of Mussismilia hispida were collected in four south-eastern Brazil islands and fixed in formalin. Volume, living and basal areas of each coral head were measured. Animals found over, under and inside the corals were sorted, resulting in 9657 specimens belonging to more than 130 taxa. The underside of the colonies was occupied by bivalves and colonial forms of sponges, bryozoans and ascidians. On the living surface, barnacles and cryptochiridean crabs were detected. The endolithic animals included polychaetes, bivalves and sipunculid worms. Most of the animals collected were vagile mic

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Verdolin, J. L., and C. N. Slobodchikoff. "Vigilance and predation risk in Gunnison's prairie dogs (Cynomys gunnisoni)." Canadian Journal of Zoology 80, no. 7 (2002): 1197–203. http://dx.doi.org/10.1139/z02-097.

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Group living in animals is believed to confer advantages related to a decrease in predation risk and an energetic trade-off between vigilance and foraging efficiency. Eight Gunnison's prairie dog, Cynomys gunnisoni, colonies in Flagstaff, Arizona (elevation 2300 m), were studied from April to August 2000 to examine the adaptive significance of colonial living in the context of predation risk and antipredator behavioral strategies. Each colony was sampled once every 10 days for a period of 3 h. Upright and quadrepedal vigilance was recorded using scan samples. All predation events were recorded

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Capps, Maura. "Fleets of Fodder: The Ecological Orchestration of Agrarian Improvement in New South Wales and the Cape of Good Hope, 1780–1830." Journal of British Studies 56, no. 3 (2017): 532–56. http://dx.doi.org/10.1017/jbr.2017.64.

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AbstractThis article challenges the dominant historical paradigms used to analyze imperial plant and animal transfers by examining the role of fodder crops in early colonial development in New South Wales and the Cape of Good Hope. In Alfred Crosby's enduring formulation of ecological imperialism—that is, the ecological transformation of temperate colonies of settlement by European plants, animals, and pathogens—was a largely independent process. To Crosby's critics, his grand narrative fails to acknowledge the technocratic management of plant and animal transfers on the part of increasingly l

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Feuerstein, Anna. "“South Africa Is the Land of Pet Animals”; or, The Racializing Assemblages of Colonial Pet-Keeping." Qui Parle 29, no. 2 (2020): 309–42. http://dx.doi.org/10.1215/10418385-8743005.

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Abstract This essay analyzes two late Victorian texts by white women colonists in South Africa—F. Clinton Parry’s children’s book African Pets (1880) and Annie Martin’s memoir Home Life on an Ostrich Farm (1890)—to nuance understandings of animality as racialization. By reading representations of colonial pet-keeping, the essay shows how the racializing tendencies of Western humanism—especially within slavery and colonialism—manifest within gendered animal-human relationships and help construct both Blackness and whiteness. It focuses on pet-keeping in the colonies to explore understandings of

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Nicotra, Matthew, Stephen Dellaporta, and Leo Buss. "Histocompatibility in an invertebrate is controlled by a complex of polymorphic IgSF-like genes. (170.4)." Journal of Immunology 186, no. 1_Supplement (2011): 170.4. http://dx.doi.org/10.4049/jimmunol.186.supp.170.4.

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Abstract Animals have evolved sophisticated immune systems to distinguish self from infectious non-self. In addition, several groups of colonial marine invertebrates—animals such as sponges, corals, and sea squirts—have evolved allorecognition systems that allow them to distinguish between their own tissues and those other members of their species. Allorecognition phenomena occur when these animals, which live as encrustations on marine surfaces, grow into contact with each other. Compatible colonies fuse, while incompatible colonies reject and often compete for space. Although allorecognition

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9

Simpson, Carl. "The evolutionary history of division of labour." Proceedings of the Royal Society B: Biological Sciences 279, no. 1726 (2011): 116–21. http://dx.doi.org/10.1098/rspb.2011.0766.

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Functional specialization, or division of labour (DOL), of parts within organisms and colonies is common in most multi-cellular, colonial and social organisms, but it is far from ubiquitous. Several mechanisms have been proposed to explain the evolutionary origins of DOL; the basic feature common to all of them is that functional differences can arise easily. These mechanisms cannot explain the many groups of colonial and social animals that exhibit no DOL despite up to 500 million years of evolution. Here, I propose a new hypothesis, based on a multi-level selection theory, which predicts tha

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10

J. Worthington, David, Ann P. Marshall, Gary J. Wiles, and Curt C. Kessler. "Abundance and management of Mariana Fruit Bats and feral ungulates on Anatahan, Mariana Islands." Pacific Conservation Biology 7, no. 2 (2001): 134. http://dx.doi.org/10.1071/pc010134.

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A survey of Mariana Fruit Bats Pteropus mariannus and feral ungulates was conducted on Anatahan, Mariana Islands, in July 1995. We estimated that a population of 1 902-2 136 bats persists on the island, based on a combination of direct colony counts, departure counts, and station counts of non-colonial animals. Our data suggest that bat numbers have declined since the last surveys were made in 1983 and 1984. We located seven colonies, which held approximately 85-92% of the total population. Most colonies and foraging animals were associated with native forest or isolated native trees in other

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11

Duca, Charles, and Miguel Ângelo Marini. "Breeding success of Cacicus haemorrhous (Linnaeus) (Aves: Icteridae) in different environments in an Atlantic Forest reserve in Southeast Brazil." Revista Brasileira de Zoologia 25, no. 2 (2008): 165–71. http://dx.doi.org/10.1590/s0101-81752008000200002.

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Several factors, including the site where the colony was established and number of active nests can influence directly or indirectly the breeding success of colonial birds. The red-rumped cacique, Cacicus haemorrhous (Linnaeus, 1766), is a passerine (Icteridae) that breeds in colonies in different environments. The objective of this study was to evaluate the breeding success of red-rumped cacique in relation to three environments (lake edge, forest and swamp) in which colonies were established in an Atlantic Forest reserve in southeast Brazil. Seven colonies from the three environments were mo

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Condit, Richard, Sarah G. Allen, Daniel P. Costa, et al. "Estimating population size when individuals are asynchronous: A model illustrated with northern elephant seal breeding colonies." PLOS ONE 17, no. 1 (2022): e0262214. http://dx.doi.org/10.1371/journal.pone.0262214.

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Our aim was to develop a method for estimating the number of animals using a single site in an asynchronous species, meaning that not all animals are present at once so that no one count captures the entire population. This is a common problem in seasonal breeders, and in northern elephant seals, we have a model for quantifying asynchrony at the Año Nuevo colony. Here we test the model at several additional colonies having many years of observations and demonstrate how it can account for animals not present on any one day. This leads to correction factors that yield total population from any s

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Ritzmann, Nicole F., Rosana M. da Rocha, and James J. Roper. "Sexual and asexual reproduction in Didemnum rodriguesi (Ascidiacea, Didemnidae)." Iheringia. Série Zoologia 99, no. 1 (2009): 106–10. http://dx.doi.org/10.1590/s0073-47212009000100015.

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Sexual and asexual reproduction and associated population dynamics were investigated in the colonial ascidian Didemnum rodriguesi Rocha & Monniot, 1993 (Didemnidae) in southern Brazil. Investment in sexual (production of new individuals) and asexual (colony growth) reproduction was compared between seasons. Permanently marked quadrats were repeatedly photographed to measure changes in colonies. Eggs and larvae were counted monthly in collected colonies. This species alternates seasonally between sexual (summer) and asexual (winter) reproduction. In summer, colonies were smaller, brooded eg

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KHAN, SHAHID B., SÁLIM JAVED, SHAKEEL AHMED, EISSA ALI AL HAMMADI, ABDULLAH ALI AL HAMMADI, and SHAIKHA AL DHAHERI. "Does a recent surge in Socotra Cormorant Phalacrocorax nigrogularis nesting population and establishment of new breeding colonies ensure long term conservation? Pragmatic assessment of recent augmentation in Abu Dhabi Emirate, UAE." Bird Conservation International 29, no. 03 (2018): 361–69. http://dx.doi.org/10.1017/s0959270918000242.

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SummaryUnited Arab Emirates is an important range country for the ‘Vulnerable’ Socotra Cormorant Phalacrocorax nigrogularis and Abu Dhabi Emirate holds most of the remaining breeding colonies. Emirate-wide monitoring of all breeding colonies was undertaken annually for 11 breeding seasons from 2006–2007 to 2016–2017 to monitor the status of breeding colonies and estimate the nesting population. Breeding was recorded in 10 colonies that were used intermittently with an average of four (± 1.3 SD) colonies active each year. The highest number of eight active colonies was recorded in 2016–2017. Es

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Gama, Petrônio Bezerra, Rosa M. V. Leonel, Malva I. M. Hernández, and Beatriz Mothes. "Recruitment and colonization of colonial ascidians (Tunicata: Ascidiacea) on intertidal rocks in Northeastern Brazil." Iheringia. Série Zoologia 96, no. 2 (2006): 165–72. http://dx.doi.org/10.1590/s0073-47212006000200005.

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Recruitment and colonization of colonial ascidians, starting on natural scraped substratum, was observed throughout one year, in quadrats marked on sea- and continental-rock faces in the sublittoral fringe of an exposed beach in the Northeast of Brazil. The species of the Didemnidae, Didemnum duplicatum Monniot, 1983, D. psammathodes Sluiter, 1895, and Polysyncraton amethysteum Van Name, 1902, and an unidentified species of Polycitoridae, Eudistoma sp. 1, were recruited. Presenting continuous recruitment of all species, the density of living and dead recruits and colonies was similar on both f

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Moum, Truls, Kjell Einar Erikstad, and Eirik Bjørklid. "Restriction fragment analysis of mitochondrial DNA in Common Murres, Uria aalge, from four Norwegian seabird colonies." Canadian Journal of Zoology 69, no. 6 (1991): 1577–84. http://dx.doi.org/10.1139/z91-221.

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Alcid species (auks) breed in a restricted number of large seabird colonies and are considered highly philopatric. Mitochondrial DNA (mtDNA) of Common Murres, Uria aalge, from four Norwegian colonies was investigated by restriction analysis to assess the amount of geographic population structure and genetic variability in a colonial breeder. Eleven restriction endonucleases revealed 13 mtDNA genotypes among 51 individuals. Genetic diversity was low, with an average of 0.11% (range 0.0–0.55%) sequence divergence between all individuals. Population divergence within the surveyed region seems to

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17

Blackstone, N. W. "Redox control in development and evolution: evidence from colonial hydroids." Journal of Experimental Biology 202, no. 24 (1999): 3541–53. http://dx.doi.org/10.1242/jeb.202.24.3541.

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Redox chemistry, involving the transfer of electrons and hydrogen atoms, is central to energy conversion in respiration, and the control of gene expression by redox state commonly occurs in bacteria, allowing rapid responses to environmental changes, for instance, in the food supply. Colonial metazoans often encrust surfaces over which the food supply varies in time or space; hence, in these organisms, redox control of the development of feeding structures and gastrovascular connections could be similarly adaptive, allowing colonies to adjust the timing and spacing of structures in response to

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18

Ainley, David G., Grant Ballard, Kerry J. Barton, et al. "Spatial and Temporal Variation of Diet Within a Presumed Metapopulation Of Adélie Penguins." Condor 105, no. 1 (2003): 95–106. http://dx.doi.org/10.1093/condor/105.1.95.

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Abstract We investigated temporal and spatial variability in the diet of chick-provisioning Adélie Penguins (Pygoscelis adeliae) breeding at all colonies within one isolated cluster in the southwestern Ross Sea, Antarctica, 1994–2000. We wished to determine if prey quality explained different population growth and emigration rates among colonies. Diet composition was described both by conventional means (stomach samples) and by analysis of stable isotopes in chick tissues (toenails of individuals killed by skuas [Stercorarius maccormicki]). Diets were similar among the four study colonies comp

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Kushlan, James A. "Colonies, Sites, and Surveys: The Terminology of Colonial Waterbird Studies." Colonial Waterbirds 9, no. 1 (1986): 119. http://dx.doi.org/10.2307/1521154.

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Blackstone, NW. "Morphological, physiological and metabolic comparisons between runner-like and sheet-like inbred lines of a colonial hydroid." Journal of Experimental Biology 201, no. 20 (1998): 2821–31. http://dx.doi.org/10.1242/jeb.201.20.2821.

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Hydractiniid hydroids display a range of morphological variation from sheet-like forms (i.e. closely spaced polyps with high rates of stolon branching) to runner-like forms (i.e. widely spaced polyps with low rates of stolon branching), thus exemplifying the patterns of heterochrony found in many colonial animals. A sheet-like and a runner-like inbred line of Podocoryne carnea were produced to investigate this heterochronic variation further. Selection on colony morphology at the time of the initiation of medusa production resulted in dramatic differences by the F5 and F6 generations. Compared

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Ludovice, Nicolo Paolo P. "The Carabao and the Encounter of the Law in Nineteenth-Century Philippines." Society & Animals 27, no. 3 (2019): 307–26. http://dx.doi.org/10.1163/15685306-12341557.

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AbstractThe place of the non-human animal in the legal world has been questioned. Animals’ legal status as property has been probed on how to best protect their welfare. While this is significant for animals who are not on the farm, it might not be effective when considering animals raised for food. The case of the carabao, or the water buffalo, in the Philippines is seen as a hybrid. This article traces the development of the carabao in Philippine history during the nineteenth century. Through historical, archival, and legal research on animals, the carabao is situated as private property. Co

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Shapiro, D. "Size-dependent neural integration between genetically different colonies of a marine bryozoan." Journal of Experimental Biology 199, no. 5 (1996): 1229–39. http://dx.doi.org/10.1242/jeb.199.5.1229.

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Although the formation of genetic chimeras is rare in the animal kingdom, it has long been known that colonial marine invertebrates fuse under natural conditions, forming genetic chimeras. I report here an example of selective, partial fusion. When small colonies of the encrusting marine bryozoan Membranipora membranacea grow into contact, they usually become behaviorally coordinated: if one colony is disturbed, both colonies will simultaneously retract their feeding structures (lophophores). As a first step towards understanding the fitness consequences of this type of apparent fusion, I exam

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ANZANI, LUTHFI, HAWIS H. MADDUPPA, I. WAYAN NURJAYA, and P. JOANA DIAS. "Short Communication: Molecular identification of White Sea Squirt Didemnum sp. (Tunicata, Ascidiacea) colonies growing over corals in Raja Ampat Islands, Indonesia." Biodiversitas Journal of Biological Diversity 20, no. 3 (2019): 636–42. http://dx.doi.org/10.13057/biodiv/d200304.

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Abstract. Anzani L, Madduppa HH, Nurjaya IW, Dias PJ. 2019. Short Communication: Molecular identification of White Sea Squirt Didemnum sp. (Tunicata, Ascidiacea) colonies growing over corals in Raja Ampat Islands, Indonesia. Biodiversitas 20: 636-642. Indonesia is at the center of the Coral Triangle, the region with the world’s highest marine biodiversity. The Raja Ampat archipelago in east Indonesia has one of the oldest networks of marine protected areas in the country and is a top priority area for marine conservation. The area is however under anthropogenic pressure from growing tourism, d

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THEBAULT, R. G., and H. DE ROCHAMBEAU. "Le lapin angora : production et amelioration génétique." INRAE Productions Animales 2, no. 2 (1989): 145–54. http://dx.doi.org/10.20870/productions-animales.1989.2.2.4409.

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Cet article présente l’état actuel des connaissances sur les niveaux de productivité quantitatifs et qualitatifs des lapins angora, et plus précisément dans les deux grandes souches sélectionnées : allemande et française. Dans leur système de production respectif, la souche allemande a un potentiel de production quantitative supérieure d’environ 20 % à la souche française, mais cette dernière produit un angora spécial nécessaire à la fabrication de fil fleuffé de haut de gamme. Les paramètres zootechniques sont précisés : quantité individuelle de poil produit, qualité laineuse ou jarreuse de l

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Selwood, L. "Synchronization of oestrus, ovulation and birth in female Antechinus stuartii (Marsupialia: Dasyuridae)." Australian Mammalogy 8, no. 2 (1985): 91–96. http://dx.doi.org/10.1071/am85007.

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Reproduction and development were studied during six annual breeding seasons in 80 female Antechinus stuartii in laboratory colonies and in 34 females which were pregnant when trapped. Oestrus, ovulation and births were each highly synchronized within any one population from a specific locality in Victoria. Before ovulation, epithelial cells were present in the urine of the females for a mean of 20.0 clays &#xb1; 4.0 (S.D.) (N=72). Matings occurred in this period. In the colonies of animals from Kinglake, the first females came into oestrus over a 4-clay period in mid-July of 1976, 1982 an

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Brinckmann-Voss, A., D. M. Lickey, and C. E. Mills. "Rhysia fletcheri (Cnidaria, Hydrozoa, Rhysiidae), a new species of colonial hydroid from Vancouver Island (British Columbia, Canada) and the San Juan Archipelago (Washington, U.S.A.)." Canadian Journal of Zoology 71, no. 2 (1993): 401–6. http://dx.doi.org/10.1139/z93-056.

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A new species of colonial athecate hydroid, Rhysia fletcheri, is described from Vancouver Island, British Columbia, Canada, and from Friday Harbor, Washington, U.S.A. Its relationship to Rhysia autumnalis Brinckmann from the Mediterranean and Rhysia halecii (Hickson and Gravely) from the Antarctic and Japan is discussed. Rhysia fletcheri differs from Rhysia autumnalis and Rhysia halecii in the gastrozooid having distinctive cnidocyst clusters on its hypostome and few, thick tentacles. Most of its female gonozooids have no tentacles. Colonies of R. fletcheri are without dactylozooids. The major

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Duca, Charles, and Miguel Â. Marini. "Temporal variation in the reproductive success of Cacicus haemorrhous (Linnaeus) (Aves, Icterinae) in an Atlantic Forest reserve in Southeast Brazil." Revista Brasileira de Zoologia 22, no. 2 (2005): 484–89. http://dx.doi.org/10.1590/s0101-81752005000200026.

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For colonial bird species, egg hatching synchrony has been considered an important factor in their reproductive success. The Red-rumped Cacique, Cacicus haemorrhous (Linnaeus, 1766), is a Passeriformes species (Icterinae) that reproduces in colonies in which groups of females lay their eggs at different periods during the reproductive season. The objective of this study was to evaluate if there was a variation in the reproductive success among C. haemorrhous females groups that lay eggs in different periods along the reproductive season. A total of 192 nests from four colonies were monitored a

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Dahlén, Börje, and Mats O. G. Eriksson. "Does the breeding performance differ between solitary and colonial breeding Red-throated Loons Gavia stellata in the core area of the Swedish population?" Ornis Svecica 26, no. 3–4 (2016): 135–48. http://dx.doi.org/10.34080/os.v26.22509.

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Most Red-throated Loons Gavia stellata are solitary breeders in small pools and provide fish prey to the chicks from larger waters at a distance seldom exceeding 10 km. More rarely, several pairs nest together in colonies. We compared the breeding performance of solitary and colonial breeders in South-central Sweden during 2000–2016 (except for 2007). Annual productivity was 0.63 and 0.52 chicks per pair and year for solitary and colonial breeding pairs respectively, and mean percentage per year of broods with two chicks did not differ, 24% and 18% (no significant differences). Average hatchin

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Travis, Steven E., and C. N. Slobodchikoff. "Effects of food resource distribution on the social system of Gunnison's prairie dog (Cynomys gunnisoni)." Canadian Journal of Zoology 71, no. 6 (1993): 1186–92. http://dx.doi.org/10.1139/z93-162.

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We tested the predictions of Slobodchikoff s habitat variability – mating system model using the social system of Gunnison's prairie dog (Cynomys gunnisoni). The model predicts that when resources are abundant and patchily distributed, social groups will include several females, while scarce, uniformly distributed resources will lead to smaller groups with single females. Gunnison's prairie dogs form family groups consisting of a single adult male and female(s), and their young of the year, which occupy fixed spatial territories within a colonial framework. Resource abundances and distribution

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Velando, Alberto, and Juan Freire. "How General is the Central-Periphery Distribution Among Seabird Colonies? Nest Spatial Pattern in the European Shag." Condor 103, no. 3 (2001): 544–54. http://dx.doi.org/10.1093/condor/103.3.544.

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AbstractThe central-periphery distribution model of nest dispersion suggests that nests located in the center of a colony are less accessible to predators and that birds breeding in the central area are of better physical quality and have greater reproductive success. Another hypothesis, the central-satellite distribution model, suggests that low-quality birds build their nests near those of high-quality pairs, which do not necessarily settle in the colony's center. Advantages of this type of association include increasing the opportunity for extra-pair copulation by low-quality females and in

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Genovart, M., D. Oro, M. G. Forero, J. M. Igual, J. González-Solís, and X. Ruiz. "Parental Body Condition Does not Correlate With Offspring Sex Ratio in Cory's Shearwaters." Condor 107, no. 1 (2005): 161–67. http://dx.doi.org/10.1093/condor/107.1.161.

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AbstractWe analyzed offspring sex ratio variation in Mediterranean Cory's Shearwater (Calonectris d. diomedea) during two consecutive breeding seasons in two colonies. We test for differential breeding conditions between years and colonies looking at several breeding parameters and parental condition. We then explored the relationship between offspring sex ratio and parental condition and breeding parameters. This species is sexually dimorphic with males larger and heavier than females; consequently we expected differential parental cost in rearing sexes, or a greater sensitivity of male chick

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HARTIKAINEN, H., and B. OKAMURA. "Castrating parasites and colonial hosts." Parasitology 139, no. 4 (2012): 547–56. http://dx.doi.org/10.1017/s0031182011002216.

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SUMMARYTrajectories of life-history traits such as growth and reproduction generally level off with age and increasing size. However, colonial animals may exhibit indefinite, exponential growth via modular iteration thus providing a long-lived host source for parasite exploitation. In addition, modular iteration entails a lack of germ line sequestration. Castration of such hosts by parasites may therefore be impermanent or precluded, unlike the general case for unitary animal hosts. Despite these intriguing correlates of coloniality, patterns of colonial host exploitation have not been well st

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Rexroad, C. E. "Production of cell colonies from ovine blastocysts." Theriogenology 33, no. 1 (1990): 305. http://dx.doi.org/10.1016/0093-691x(90)90729-d.

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Robinson, Scott K. "Coloniality in the Yellow-Rumped Cacique as a Defense against Nest Predators." Auk 102, no. 3 (1985): 506–19. http://dx.doi.org/10.1093/auk/102.3.506.

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Abstract Individuals of the colonial Yellow-rumped Cacique (Cacicus cela) in Amazonian Peru can defend their nests against predators in three ways. First, by nesting on islands and around wasp nests, caciques are safe from arboreal mammals such as primates, which destroy many more-accessible colonies. Caimans and otters that live in lakes also protect island colonies from snakes, which are vulnerable when crossing open water. Second, by clustering nests together and mobbing as a group, caciques can deter many avian predators, which take spatially isolated nests in small colonies. The effective

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deFrance, Susan D. "DIETA Y USO DE ANIMALES EN EL POTOSÍ COLONIAL." Chungará (Arica) 44, no. 1 (2012): 09–24. http://dx.doi.org/10.4067/s0717-73562012000100002.

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Hartikainen, H., S. Humphries, and B. Okamura. "Form and metabolic scaling in colonial animals." Journal of Experimental Biology 217, no. 5 (2013): 779–86. http://dx.doi.org/10.1242/jeb.093484.

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Reitz, Elizabeth J. "The Spanish colonial experience and domestic animals." Historical Archaeology 26, no. 1 (1992): 84–91. http://dx.doi.org/10.1007/bf03374163.

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López, Elora H., and Stephen R. Palumbi. "Somatic Mutations and Genome Stability Maintenance in Clonal Coral Colonies." Molecular Biology and Evolution 37, no. 3 (2019): 828–38. http://dx.doi.org/10.1093/molbev/msz270.

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Abstract One challenge for multicellular organisms is maintaining genome stability in the face of mutagens across long life spans. Imperfect genome maintenance leads to mutation accumulation in somatic cells, which is associated with tumors and senescence in vertebrates. Colonial reef-building corals are often large, can live for hundreds of years, rarely develop recognizable tumors, and are thought to convert somatic cells into gamete producers, so they are a pivotal group in which to understand long-term genome maintenance. To measure rates and patterns of somatic mutations, we analyzed tran

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Mannini, Antonella, Nadja Kerstin, Lido Calorini, Gabriele Mugnai, and Salvatore Ruggieri. "An enhanced apoptosis and a reduced angiogenesis are associated with the inhibition of lung colonisation in animals fed an n-3 polyunsaturated fatty acid-rich diet injected with a highly metastatic murine melanoma line." British Journal of Nutrition 101, no. 5 (2008): 688–93. http://dx.doi.org/10.1017/s0007114508043791.

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Both epidemiological and experimental studies indicate that dietary n-3 PUFA inhibit carcinogenesis and tumour growth. Metastatic diffusion has also been found to be affected in animals fed diets containing purified n-3 PUFA or fish oil. In the present study, we investigated whether the metastatic diffusion of a highly metastatic variant (F10-SR cells) isolated from the B16 melanoma F10 line was affected by feeding host animals a diet containing 5 % fish oil. In these animals, compared with those fed a diet containing 5 % maize oil, there was a reduced number of metastatic pulmonary colonies.

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Miller, Manuel, and Markus Brielmeier. "Environmental samples make soiled bedding sentinels dispensable for hygienic monitoring of IVC-reared mouse colonies." Laboratory Animals 52, no. 3 (2017): 233–39. http://dx.doi.org/10.1177/0023677217739329.

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Accurate knowledge of the health status of experimental animals is pivotal to high scientific and ethical standards in biomedical research. Individually ventilated cages (IVCs) are becoming the predominant system for housing laboratory mice, as they prevent cage-to-cage infections. However, this feature constitutes a major drawback for hygienic monitoring of mouse colonies, as traditional screening programs build on reliable transmission of infectious agents from experimental animals to sentinel mice commonly tested as representatives for the mouse colonies. In recent years, the laboratory ani

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Oro, Daniel. "Colonial Seabird Nesting in Dense and Small Sub-Colonies: An Advantage against Aerial Predation." Condor 98, no. 4 (1996): 848–50. http://dx.doi.org/10.2307/1369868.

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Wiggett, Darwin R., and David A. Boag. "Natal dispersal in Columbian ground squirrels: is body mass the proximate stimulus?" Canadian Journal of Zoology 70, no. 4 (1992): 649–53. http://dx.doi.org/10.1139/z92-097.

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Data on body mass and dispersal history of Columbian ground squirrels (Spermophilus columbianus) were collected at five colonies in southwestern Alberta. Two colonies were studied from 1983 to 1990 and three from 1984 to 1986. Body mass of yearling male dispersers did not differ significantly from that of nondispersers. Among dispersers, heavier animals did not disperse before lighter ones. Extremely small animals, however, may delay dispersal until they are 2 years old. Timing of dispersal was not apparently related to body mass; dispersing squirrels showed a wide range in body mass, with dis

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Wiggett, Darwin R., and David A. Boag. "Intercolony natal dispersal in the Columbian ground squirrel." Canadian Journal of Zoology 67, no. 1 (1989): 42–50. http://dx.doi.org/10.1139/z89-007.

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Dispersal of Columbian ground squirrels (Spermophilus columbianus) among 16 colonies located in the Sheep River – Gorge Creek drainage of southwestern Alberta was studied from 1973 to 1986. In total, 73 intercolony movements involving 66 different animals were recorded. Intercolony dispersal movements were strongly biased towards males and were almost exclusively undertaken by 1-year-old squirrels (yearlings). The timing of emigration from the colonies studied was highly synchronous and was correlated with the dates of emergence of new litters. Yearling females that dispersed tended to leave a

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Nweze, Emeka I. "Dermatophytoses in domesticated animals." Revista do Instituto de Medicina Tropical de São Paulo 53, no. 2 (2011): 94–99. http://dx.doi.org/10.1590/s0036-46652011000200007.

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Dermatophytes are among the most frequent causes of ringworm infections in domesticated animals. They are known to serve as reservoirs of the zoophilic dermatophytes and these infections have important zoonotic implication. In Nigeria and probably West Africa, there are not many studies on the incidence of dermatophytosis in domesticated animals. In the current study, 538 domesticated animals with clinically suggestive lesions were investigated for dermatophytes. Identification of dermatophyte species was performed by macro- and micro morphological examination of colonies and by biochemical me

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Levy, Michael Z., Aaron Tustin, Ricardo Castillo-Neyra, et al. "Bottlenecks in domestic animal populations can facilitate the emergence of Trypanosoma cruzi , the aetiological agent of Chagas disease." Proceedings of the Royal Society B: Biological Sciences 282, no. 1810 (2015): 20142807. http://dx.doi.org/10.1098/rspb.2014.2807.

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Faeces-mediated transmission of Trypanosoma cruzi (the aetiological agent of Chagas disease) by triatomine insects is extremely inefficient. Still, the parasite emerges frequently, and has infected millions of people and domestic animals. We synthesize here the results of field and laboratory studies of T. cruzi transmission conducted in and around Arequipa, Peru. We document the repeated occurrence of large colonies of triatomine bugs (more than 1000) with very high infection prevalence (more than 85%). By inoculating guinea pigs, an important reservoir of T. cruzi in Peru, and feeding triato

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Daniel, Abby, and Johel Chaves-Campos. "Contrary to vertebrates, less aggressive and more consistent individuals are common in disturbed habitats in the colonial spider Metabus gravidus (Araneae: Araneidae)." Behaviour 158, no. 3-4 (2021): 225–48. http://dx.doi.org/10.1163/1568539x-bja10063.

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Abstract Habitat disturbance may affect average behavioural types and consistency/plasticity of behaviour. Studies with solitary vertebrates suggest that human-modified habitats may favour bolder, more aggressive and more plastic individuals. We evaluated whether wild colonial spiders, Metabus gravidus, vary in the magnitude, consistency and plasticity of boldness and aggressiveness between an undisturbed forest and an adjacent urban area in Monteverde, Costa Rica. Repeatability of aggressiveness was high at the disturbed site but moderate at the undisturbed site; repeatability of boldness was

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Tsuchiya, Y., G. A. Raasch, T. L. Brandes, K. Mizoshita, and C. R. Youngs. "Isolation of ICM-derived cell colonies from sheep blastocysts." Theriogenology 41, no. 1 (1994): 321. http://dx.doi.org/10.1016/s0093-691x(05)80231-6.

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Gilioli, R., L. A. G. Andrade, L. A. C. Passos, F. A. Silva, D. M. Rodrigues, and A. M. A. Guaraldo. "Parasite survey in mouse and rat colonies of Brazilian laboratory animal houses kept under differents sanitary barrier conditions." Arquivo Brasileiro de Medicina Veterinária e Zootecnia 52, no. 1 (2000): 33–37. http://dx.doi.org/10.1590/s0102-09352000000100009.

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A parasitological study was undertaken to determine the health status of 15 mouse and 10 rat colonies bred in 18 Brazilian laboratory animal houses maintained under different sanitary barrier conditions which supply animals for teaching, research purposes and manufacture of biological products for medical or veterinary use. Parasitological methods were used for diagnosis of mites, lices, helminthes and protozoan parasites. A questionnaire was answered by institutions with the intention to obtain information about the existence of barriers against infections and of regular sanitary monitoring p

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Simpson, Carl, Jeremy B. C. Jackson, and Amalia Herrera-Cubilla. "Evolutionary Determinants of Morphological Polymorphism in Colonial Animals." American Naturalist 190, no. 1 (2017): 17–28. http://dx.doi.org/10.1086/691789.

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Gutschick, Raymond C., and Joaquin Rodriguez. "By-the-wind-sailors from a Late Devonian foreshore environment in western Montana." Journal of Paleontology 64, no. 1 (1990): 31–39. http://dx.doi.org/10.1017/s0022336000042219.

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Three remarkable fossil medusoid hydrozoans (Plectodiscus latinautilus n. sp.) with disc, topsail, and pendant tentacular appendages were recovered from the latest Late Devonian beds of the Sappington Member of the Three Forks Formation in the Gallatin Range, southwest Montana. This is the first velellid reported from a Paleozoic beach paleoenvironment. Top and underside patterns of these chondrophorine velellids display well-preserved casts and mold imprints in fine siltstone. Outlines of the circular disc and the profile of the wide sail and tentacular structures embedded in soft tissue can

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